STPSat-4 deployed from ISS – Satellite News Digest
The United States Space Force’s Space and Missile Systems Center (SMC) and its mission partner, NASA, successfully deployed the Department of Defense (DoD) Space Test Program Satellite-4 (STPSat-4) from the International Space Station on 28 January 2020. http://www.sat-nd.com/archive/?id=2020013000